B41J 2/18
Ink recirculation systems
B41J2/18 (Ink recirculation systems) appears on 1,890 US grants and 2,213 published applications in this corpus.
Search patents in B41J- Granted patents
- 1,890
- Published applications
- 2,213
- Assignees
- 239
- Inventors
- 2,697
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 9 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 8 | 0 |
| 1981 | 8 | 0 |
| 1982 | 7 | 0 |
| 1983 | 7 | 0 |
| 1984 | 6 | 0 |
| 1985 | 3 | 0 |
| 1986 | 11 | 0 |
| 1987 | 8 | 0 |
| 1988 | 3 | 0 |
| 1989 | 13 | 0 |
| 1990 | 9 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 7 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 26 | 1 |
| 2002 | 16 | 11 |
| 2003 | 18 | 14 |
| 2004 | 12 | 18 |
| 2005 | 14 | 31 |
| 2006 | 9 | 21 |
| 2007 | 22 | 17 |
| 2008 | 16 | 32 |
| 2009 | 9 | 78 |
| 2010 | 18 | 62 |
| 2011 | 53 | 150 |
| 2012 | 58 | 67 |
| 2013 | 104 | 79 |
| 2014 | 94 | 57 |
| 2015 | 83 | 59 |
| 2016 | 68 | 83 |
| 2017 | 73 | 111 |
| 2018 | 88 | 124 |
| 2019 | 131 | 192 |
| 2020 | 178 | 187 |
| 2021 | 148 | 138 |
| 2022 | 99 | 134 |
| 2023 | 120 | 131 |
| 2024 | 94 | 156 |
| 2025 | 102 | 136 |
| 2026 | 87 | 124 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Inkjet printing device6 Oct 2026US 12,752,549 B2Makeblock Co., Ltd.
- Flow path connection mechanism and inkjet recording apparatus29 Sep 2026US 12,746,755 B2KYOCERA Document Solutions Inc.
- Liquid discharge head29 Sep 2026US 12,746,757 B2Canon Kabushiki Kaisha
- Degassing device and inkjet recording apparatus29 Sep 2026US 12,746,758 B2KYOCERA Document Solutions Inc.
- Luminescent ink and ceramic product with a label printed with luminescent ink22 Sep 2026US 12,742,087 B2AsociacióN De InvestigacióN De Las Industrias Ceramicas (Aice)
- Inkjet recording apparatus8 Oct 2026US 2026/0307395 A1KYOCERA Document Solutions Inc.
- Liquid ejection head and liquid ejection apparatus8 Oct 2026US 2026/0307396 A1Canon Kabushiki Kaisha
- Liquid discharge head1 Oct 2026US 2026/0296015 A1Canon Kabushiki Kaisha
- Liquid storage tank, liquid circulation device, recording apparatus including liquid circulation device, and liquid storage tank group1 Oct 2026US 2026/0296045 A1KYOCERA Corporation
- Liquid filling method and liquid discharge head1 Oct 2026US 2026/0296046 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Continuous ink jet printer with asymmetric heating drop deflection152US 6,079,821 AEastman Kodak Company · 2000
- Printhead having gas flow ink droplet separation and method of diverging ink droplets149US 6,554,410 B2Eastman Kodak Company · 2003
- Media cartridge and ink jet recording apparatus131US 6,378,997 B1Canon Kabushiki Kaisha · 2002
- Ink jet recording apparatus, sub-tank unit adapted thereto, and ink droplet ejection capability recovery method105US 6,390,611 B1Seiko Epson Corporation · 2002
- Jet nozzle structure for electrohydrodynamic droplet formation and ink jet printing system therewith92US 3,949,410 AInternational Business Machines Corporation · 1976